import 'package:flutter/material.dart';

class MyApp1 extends StatelessWidget {
  const MyApp1({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      // 导航条
      appBar: AppBar(
        title: const Text('Flutter初体验',
            style: TextStyle(color: Colors.white, fontSize: 20)),
        backgroundColor: Colors.pink,
        centerTitle: true,
      ),
      // 主体区域
      body: const Center(
        child: Text('Hello World'),
      ),
    );
  }
}
